If it's just the master link, you can easily replace that and continue to use the chain.
Otherwise one of the really good kinds is the RK Gold chain. It's a little cheaper on gps (depends on shipping price) than Amazon
https://www.gopowersports.com/rk-gold-premium-racing-chain-420-5ft/
For the RK chain you'll need a chain breaker to take out some links for the right fit, it comes in a 5 foot length.